JP2012006637A - Packaging bag for secondary packaging configured to transport infectious substance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag for secondary packaging used for transport of infectious substances in which a loading-and-unloading port is not opened even when internal pressure is increased.SOLUTION: A front surface material 2 and a back surface material 3 formed of a plastic sheet or film are formed into a bag member by heat-sealing 10 both side surfaces and bottom surfaces. By disposing partitioning materials 4 and 5 each formed of a plastic sheet or film on the inside of an opening 12 of the front and back surface materials 2 and 3 and heat-sealing 6 upper surfaces and both side surfaces, pocket portions are formed. Then, a sealing material 11 is provided on the outside of the upper portion of the back surface material 3. The packaging bag is constituted in such a way that, when the internal pressure of the packaging bag 1 is increased, the internal pressure is received by any one of the pocket portions. Thus, even when the internal pressure of the packaging bag is increased to a standard value 95 kPa or higher defined by Infectious Diseases Control Law and the like due to the influence of external air temperature, the internal pressure is received by any one of the pocked portions, so that the opening 12 is not opened, and the heat seal portion of the packaging bag is not peeled off.

Description

  The present invention relates to a packaging bag for secondary packaging for safely packaging and transporting a container containing an infectious substance such as a pathogen (sometimes referred to as “specimen”).

  In order to transport an infectious substance (air transport), it is classified into Category A and Category B in the Aviation Dangerous Goods Regulations, depending on the type of infectious substance. It is obliged to pack and transport it. As the primary packaging, for example, a container that can be sealed with a plug material such as a test tube, a blood collection tube, or a cup is adopted, and as the secondary packaging, the primary packaging container is wrapped with a cushioning material, for example, in a bag shape and sealed. Standards specified in the Infectious Disease Law, etc., which are waterproof, that is, resin bags (pouches) that can withstand a pressure difference of 95 kPa or more in the temperature range of −40 to 55 ° C. are adopted. The tertiary packaging is an outer container that accommodates the secondary packaging, and has, for example, a relatively strong structure having water resistance, impact resistance, and heat insulation.

  A well-known example of this type of packaging container is, for example, a transport container that packs an infectious substance in a container, and stores and transports the package. A cylindrical main body formed of a corrugated cardboard or other cardboard material and having a rectangular cross section of a desired size; A bottom lid portion formed by a flap that is foldably connected to one end of the main body, and an upper lid portion formed by a flap that is foldably connected to the other end of the main body. A cylindrical lid, a bottom lid that closes an opening at one end of the barrel, and an upper lid that closes an opening at the other end of the barrel, the cylindrical barrel being foamed paper It has a predetermined width and length, and has a desired wall thickness. The bottom member is configured to be bent along a bent portion provided in parallel in a width direction at a predetermined portion of the plate material, and to form a rectangular cross section by contacting both ends of the plate material. Is formed of a material having a heat insulating property and a buffering property, and has a rectangular bottom plate that is sized to match the end face of the opening at the one end of the barrel, and the bottom plate is related to the opening of the barrel. And the upper lid portion is formed of a material having heat insulating properties and interference properties, and is sized to match the end surface of the opening at the other end of the body portion. There is a container for transporting infectious substances, which has a rectangular top plate and an engaging means for releasably engaging the top plate with the opening of the trunk (see Patent Document 1). .

  This transport container is an outer packaging container for tertiary packaging, and can be transported while temperature control such as keeping the contents (packed infectious substance) contained in the heat insulation container at a predetermined temperature. Since the plate | board material which forms the cylindrical trunk | drum of an insulated container can be accumulated and stored, storage space can be made small. Also, the bottom lid and the top lid can be stacked and stored. Furthermore, since the outer container can also be folded and formed into a flat shape, it can be stacked and stored in the same manner as described above. And you can assemble it when you need it. Since the buffering action (shock absorbing action) is provided, the contents (contents) can be protected from external influences such as physical damage.

  In this known example, an example of a secondary packaging container is disclosed. The container of the example employs a plastic bag (pouch / pouch). The plastic pouch superposes two plastic sheets and adheres the upper, lower, left and right edges hermetically by heat sealing or the like. For example, a cutout is formed in the range not reaching the both side surfaces near the upper end of the plastic sheet on one side, and a zipper is attached to the inside of the drawout port so that it can be opened and closed. The fastener is composed of a resin-made convex engagement piece and a concave engagement piece. By pressing from above the sheet, the convex and concave engagement pieces are engaged and brought into close contact with each other. By applying a force so as to pull apart, the engagement pieces are disengaged from each other. And in the state which the said convex-shaped and concave-shaped engagement piece engaged and closely_contact | adhered, a single-sided adhesive tape is stuck on the entrance / exit, and it seals.

Utility Model Registration No. 3153217

  By the way, the pouch made of the plastic sheet of the secondary packaging in the above-mentioned known example is provided with a cutout in the plastic sheet on one side so as not to reach both sides, and a plastic fastener is formed on the inside thereof. In addition to having the problem that the handling and workability of the package is difficult because it is difficult to take in and out the package due to the narrow entrance and exit, the entrance and exit is the convex shape of the resin fastener in actual use. The sealing force is maintained by the engagement force by the concave engagement piece and the adhesive force by the single-sided adhesive tape, but when the internal air expands due to a temperature change and the internal pressure becomes a reference pressure of 95 kPa or more In addition, the pressure acts directly on the adhesive tape through the fastener, and the pouch bulges cause the plastic sheet to be completely removed. The adhesive tape is peeled off due to the direct pressure action and elongation action, and then the fastener engagement piece is released and the entrance / exit is opened. There is a problem that it becomes impossible to withstand a pressure difference set by a prescribed standard.

  Therefore, the plastic sheet or film pouch of the secondary packaging of the known example is in a double sealed state due to the engaging force of the fastener and the adhesive force of the adhesive tape, but the air inside the pouch expands due to temperature change. The pressure applied to the adhesive tape is directly applied to the adhesive tape, and the adhesive tape is peeled off to disengage the fastener's engaging piece and cannot be kept sealed. It is not credible to use for transportation.

  The main object of the present invention is to provide a packaging bag for secondary packaging that does not open the inlet / outlet port even when the standard internal pressure defined by the Infectious Diseases Law becomes a pressure of 95 kPa or more.

  Another object of the present invention is to make the opening (in / out port) through which the package is taken in and out open the entire one side surface (upper surface) of the container (pouch), thereby facilitating handling and taking in and out workability. It is to provide a packaging bag for secondary packaging.

  The present invention is a transport container for transporting infectious substances in primary packaging, secondary packaging and tertiary packaging as a specific means for solving the above-mentioned problems, and for secondary packaging in the transport container. The packaging bag is formed by overlapping a surface material and a back material made of a plastic sheet or film, excluding the upper surface as an opening, and heat-sealing both side surfaces and the bottom surface in series. A partition material having a required size made of a plastic sheet or a film is disposed inside the upper surface of the surface material and the back material serving as the opening, respectively, and heat sealing the upper surface and both side surfaces A partition material is attached to each of the two to form a pocket portion, and a sealing material is provided on the upper outer side of the back surface material so that the opening is not opened, and when the internal pressure of the packaging bag increases, Same partition material There is provided a packaging bag for secondary packaging, characterized in that the surface contact has been maintained a configuration for receiving the internal pressure in one of the pockets.

  In the present invention, the surface material and the back surface material are formed of a single plastic sheet or film continuous with a bottom member folded back for a required length, and the side portions of the bottom member folded back for the required length are respectively a surface material and a back surface. The bottom surface of the partition material is widened in a ship bottom shape by heat-sealing with the material; the surface contact side of the partition material is formed of a material with high compatibility between materials; the partition material is in a packaging bag The length (width) of 1/4 to 1/2 of the length of the opening; and the plastic sheet or film has a three-layer structure in which polyethylene is integrally laminated on both sides with nylon as a core material. Is included as an additional requirement.

  According to the packaging bag for secondary packaging according to the present invention, even if the internal pressure of the packaging bag becomes a pressure of 95 kPa or more which is regulated by the Infectious Disease Law etc. due to the influence of the outside air temperature during transportation, the internal pressure is reduced. Since it is received by the pocket provided on the opening side, the opening, that is, the entrance / exit is not opened, and the heat seal part of the packaging bag is not peeled off, so that the infectious substance can be safely transported. There is an effect.

  Furthermore, since the opening provided on one side of the packaging bag, that is, the upper surface can be opened completely, there is also an excellent effect that the work of handling and handling the packaged object such as infectious substances can be easily performed.

It is the top view which showed the packaging bag for secondary packaging which concerns on the 1st Embodiment of this invention. It is the perspective view which isolate | separated and showed the plastic sheet or film which is a structural member of the packaging bag based on the embodiment. It is the schematic longitudinal cross-sectional view shown in order to understand the structure of the packaging bag based on the embodiment. It is explanatory drawing which showed schematically the packaging form of the infectious substance accommodated in the packaging bag which concerns on the embodiment. It is a perspective view of the principal part which shows the condition which accommodates the packaged infectious substance in the packaging bag which concerns on the embodiment. It is a top view of the state which accommodated the packaged infectious substance in the packaging bag which concerns on the embodiment. It is sectional drawing which follows the AA line of FIG. In the packaging state of FIG. 7, it is explanatory drawing which showed schematically the state which the internal air of the packaging bag expanded by external temperature, and the internal pressure rose. It is the top view which showed the packaging bag for secondary packaging which concerns on the 2nd Embodiment of this invention. It is the perspective view which isolate | separated and showed the plastic sheet or film which is a structural member of the packaging bag based on the embodiment. It is the perspective view which showed schematically the use condition of the packaging bag which concerns on the embodiment.

  The present invention will be described based on the illustrated embodiment. 1 to 3, a packaging bag 1 for secondary packaging according to the first embodiment includes a surface material 2 and a back material 3 made of two rectangular plastic sheets or films having the same size. It is formed by overlapping and heat-sealing the three side edges. In this case, as shown in FIG. 2, the front surface material 2 and the back surface material 3 are provided with partition members 4 and 5 of a required size made of a plastic sheet or film on the upper end side which becomes an opening as a bag body. Are overlapped with each other, and the upper surface side and both side surfaces are sequentially heat-sealed 6 and 7 to form pocket portions 4a and 5a, respectively.

  And since the surface material 2 and the back surface material 3 are overlap | superposed so that these partition materials 4 and 5 side may be faced, the position of the both sides in which the pocket parts 4a and 5a are formed has the level | step difference, The part In order to eliminate the difference in level, the positions of both side surfaces are heat sealed 8 and 9 to be flat to some extent, and then the both side surfaces except the top surface side and the bottom surface side are heat sealed 10 in series to form a bag body, The packaging bag 1 is formed, and the length (width) of the partition members 4 and 5 entering the bag body is generally in the range of 1/4 to 1/2 of the length in the opening of the packaging bag 1; It is at least about 1/3 of the height of the bag.

  A sealing material 11 formed in a rectangular shape of a required size made of a plastic sheet or film is integrally attached to the outer side of the upper surface of the back material 3 of the packaging bag 1 formed in this way with an adhesive or the like. The sealing material 11 is folded so as to cover the upper surface opening 12 of the packaging bag 1 after the infectious substance as the package is stored inside the packaging bag 1, and is appropriately bonded to the surface material 2. The opening 12 is pressed so as not to open.

  As an example of the adhesive means in this case, for example, an adhesive layer 13 having a required width is printed and formed on the free end side of the sealing material 11, and a peelable protective film is attached to the adhesive layer 13. Alternatively, a double-sided adhesive tape composed of an adhesive layer 13 and a release paper is attached, and the sealing material 11 is folded to the surface material 2 side at the time of use, and the protective film or the release paper is peeled off to release the adhesive layer 13. Is adhered to the surface material 2 to fix the sealing material 11, so that the upper surface opening 12 of the packaging bag 1 is pressed by the sealing material 11 so as not to open.

  The infectious substance accommodated in the packaging bag 1 for secondary packaging according to the first embodiment is accommodated in the packaging bag 1 as a primary package 14 as shown in FIG. The primary packaging 14 is, for example, an infectious substance placed in a test tube 15 and sealed with a lid member 16, and the whole is safely packaged with a packaging material 17 having cushioning properties and liquid absorption properties. Yes, it is primarily packaged by almost the same means as the conventional example.

  As shown in FIG. 5, the infectious substance package 14 primarily packaged in this way opens the opening 12 of the packaging bag 1, and stores the package 14 with a margin from the opening 12. As shown in Fig. 3, the air is passed through the partition members 4 and 5 and pushed into the storage portion on the bottom side that occupies approximately 2/3 of the packaging bag 1 so that the air in the packaging bag 1 is excluded to some extent. 7 by folding the sealing material 11 to the surface material 2 side, peeling off the protective film or release paper, and sticking the adhesive layer 13 to the surface material 2, and preventing or fixing the opening 12 so as not to open. As shown in Fig. 2, the secondary packaging is completed. The infectious substance that is secondarily packaged is housed and transported in a third packaging container (exterior container) having a required strength, as in the conventional example.

  Therefore, changes in the outside air temperature during transportation, in particular, the outside air temperature rises in the tropics, the air in the packaging bag 1 of the secondary packaging expands, and the internal pressure is a pressure that exceeds the reference value of 95 kPa prescribed by the Infectious Disease Law. The situation which became will be described with reference to FIG.

  When the air in the packaging bag 1 expands, the entire packaging bag 1 swells, and the side surface on which the heat seal 10 part is formed approaches the inside as a whole. Due to the approach, the partition members 4 and 5 provided on the inside maintain the surface contact state and are deformed while being in surface contact with either the front surface material 2 or the back surface material 3. That is, the partition members 4 and 5 are about 1/4 to 1/2 the length (width) of the length of the opening 12 in the packaging bag 1, that is, about 1/3 of the height of the packaging bag 1. Since they are formed so long or wide, they are always in a surface contact state, and as the internal pressure rises, the contact state (contact pressure) of both surface contacts increases more and more, as shown in the figure In addition, it is strongly pressed against one of the back surface materials 3 side, and only the degree of adhesion between the two is increased, and the sealing material 11 is hardly affected by internal pressure, and pushes the inlet / outlet, that is, the opening 12. Since the action of spreading does not work, it does not open, and the increased internal pressure in the packaging bag 1 is inevitably received by the pocket portion 4a of the partition member 4, and the adhesive strength of each heat seal portion is strong, so the packaging bag 1 Fear to burst as It is not even.

  Next, a packaging bag 21 for secondary packaging according to a second embodiment will be described with reference to FIGS. This packaging bag 21 can store a large volume of infectious substances (50 to 150 in the case of a test tube), and is formed in a pouch shape in which the bottom of the bag body opens into a ship bottom. The other basic components other than the bottom pouch shape are substantially the same as those in the first embodiment, and will be described with the same reference numerals.

  As shown in FIG. 9, the packaging bag 21 has a long horizontal direction and a short height direction. For example, the horizontal x height x bottom opening dimension is about 550 mm x 350 mm x 230 mm. Needless to say, the dimensions can be changed as appropriate.

  And as shown in FIG. 10, the surface material 2 and the back surface material 3 are formed in series with one plastic sheet or film material through the bottom surface material 22 turned back required length. In this case, the bottom material 22 folded back to the required length is continuous and folded back inward between the surface material 2 and the back material 3, and the folded length is approximately 1 / height of the height of the packaging bag 21. The bottom surface material 22 is individually heat-sealed 23 and 24 with the surface material 2 and the back surface material 3, respectively, and the lower end portions of the surface material 2 and the back surface material 3 are individually heat-sealed 25 and 26, respectively. The heat seals 25 and 26 are for improving the strength of the folded portion at the boundary with the bottom material 22.

  Next, partition members 4 and 5 are respectively arranged inside the front surface material 2 and the back surface material 3 of the portion that becomes the upper surface opening portion 12 of the packaging bag 21, and the upper surface and the upper surface as in the first embodiment. The pockets 4a and 5a are formed by heat-sealing 6 and 7 in series on both sides.

  Then, the surface material 2 and the back surface material 3 are overlapped with the partition materials 4 and 5 facing each other, the positions of both side surfaces where the pocket portions 4a and 5a are formed, and the heat seal 23 of the bottom surface material 22, Steps are also generated at the boundary positions of 24, so that the positions of both side surfaces are made spot heat-seal 8, 9, 27, 28 in order to eliminate the steps of those portions, and then flattened to some extent. The bag body, that is, the packaging bag 21, is formed by heat sealing 10 on both side surfaces except the upper surface side, the bottom surface side, and the heat seals 23 and 24. In addition, the size or width of the partition members 4 and 5 is formed to a length (width) of about 1/4 to 1/2 of the length of the packaging bag 1 as in the first embodiment, This is about 1/3 of the packaging bag 1 in the height direction.

  The sealing material 11 formed in a rectangular shape of a required size made of a plastic sheet or film is integrally attached to the outer surface of the upper surface of the back material 3 of the packaging bag 21 formed in this way with an adhesive or the like. The sealing material 11 is formed by printing an adhesive layer 13 having a required width in advance, and the adhesive layer 13 is protected with a peelable protective film, or the adhesive layer 13 and a release paper A double-sided adhesive tape made of is attached, and in use, after the infectious substance as the package is stored inside the packaging bag 21, the upper surface opening 12 of the packaging bag 21 is covered entirely. Folding, peeling off the protective film or release paper, and sticking the adhesive layer 13 to the surface material 2 to prevent the opening 12 from opening.

  Regarding the plastic sheet or film used in the present invention, “Sealant PE Film” manufactured by Tamapoli Co., Ltd., product names “SB-5”, “SB-7”, and “SB-10” are preferable. These products have a three-layer structure in which nylon is integrally laminated on both sides with nylon as the core material. The thickness can be used in the range of 30 to 150 μm, and it has low elongation, is strong, flexible, and has a low temperature seal. It has excellent properties. Moreover, what is used for the front surface material 2 and the back surface material 3 is preferably PET20 / NY20 / LLDPE70, and LLDPE30 / NY20 / LLDPE70 can be used for the partition materials 4 and 5, particularly on the surface contact side. In LDPE30, EVA was contained in the range of 3 to 10%, thereby making the surface contact property even more preferable. As the sealing material 11, the film of PP60 is used because it simply maintains the closed state of the opening 12, but is not limited thereto.

  By selecting the material to be used in this way, the characteristics of the packaging bags 1 and 21, in particular, toughness and reduced elongation, heat seal strength is high and does not peel off, and the opening 12 opens due to temperature changes. Such as having a high occlusion maintenance function. Further, for example, the presence of LLDPE (linear low-density polyethylene layer) in the surface layer of the sheet or film used as the partitioning members 4 and 5, the familiarity of both surface contact is good, By incorporating EVA, which is a material with high compatibility between materials, into the LLDPE on the surface contact side in a range of 3 to 10%, when the internal pressure is increased, the degree of close contact between both surfaces is further increased, and the opening The opening of the part 12 is prevented.

  The packaging bag for secondary packaging according to the present invention is provided with an extra fastener by forming a partition portion by providing a partition material on the inner side where the opening portion is formed by the front surface material and the back surface material constituting the bag body. Even if it is not attached, even if the internal pressure of the packaging bag due to temperature changes exceeds the standard value of 95 kPa stipulated by the Infectious Disease Law etc., the internal pressure is completely received by the pocket provided on the opening side. Therefore, it is possible to safely transport the stored items without opening the opening or rupturing the packaging bag, especially when airborne infectious substances are transported to areas or areas where the temperature changes rapidly. It can be widely used.

1,21 Packaging bag for secondary packaging
2 Surface material 3 Back surface material 4, 5 Partition material 4a, 5a Pocket portion 6, 7, 10, 23, 24, 25, 26 Heat seal 8, 9, 27, 28 Spot heat seal 11 Sealing material 12 Opening portion ( Entrance)
13 Adhesive layer (adhesion means)
14 Package 15 Test tube 16 Lid member 17 Packaging material

Claims (5)

It is a transport container for transporting infectious substances in primary packaging, secondary packaging and tertiary packaging, and a packaging bag for secondary packaging in the transport container,
The packaging bag is formed by overlapping a surface material and a back material made of a plastic sheet or film, heat-sealing both side surfaces and the bottom surface in series except for the top surface as an opening,
A partition material of a required size made of a plastic sheet or a film is arranged inside the upper surface of the surface material and the back material serving as the openings, respectively, and the upper surface and both side surfaces are heat sealed to partition the surface material and the back material. Each material is attached to form a pocket,
Provide a sealing material to be adhered by an adhesive means so that the opening does not open on the upper outer side of the back material,
A packaging bag for secondary packaging, characterized in that when the internal pressure of the packaging bag rises, the surface contact between the partition members is maintained and the internal pressure is received at one of the pocket portions. The surface material and the back surface material are formed of a continuous plastic sheet or film with a bottom member folded back for the required length, and the side portions of the bottom member folded back for the required length are heated to the surface material and the back surface material, respectively. The packaging bag for secondary packaging according to claim 1, wherein the packaging is configured such that the bottom surface expands in a ship bottom shape. The packaging bag for secondary packaging according to claim 1, wherein the surface contact side of the partition member is formed of a material having high compatibility between materials. The packaging bag for secondary packaging according to claim 1 or 3, wherein the partition member has a length (width) of 1/4 to 1/2 of the length of the opening in the packaging bag. The packaging bag for secondary packaging according to claim 1 or 2, wherein the plastic sheet or film has a three-layer structure in which nylon is used as a core material and polyethylene is integrally laminated on both surfaces.

Images